Cases of Strep A in Suffolk over the last 12 months remain "extremely low" amid concerns about the infection and young children.
Health experts are investigating cases of a rare invasive group of the infection which has seen six confirmed deaths in young children.
The UK Health Security Agency says there has been a rise in the infection this year, particularly in children under 10.
The group A bacteria can cause a range of infections, including the skin infection impetigo, scarlet fever and strep throat.
The Agency said there is no current evidence that a new strain is circulating and the rises are most likely due to high amounts of circulating bacteria and social mixing.
The vast majority of infections are relatively mild.
Suffolk Public Health says cases in the county have over the last 12 months been extremely low.
A Suffolk Public Health spokesperson said: "Many people carry Group A Strep harmlessly and do not develop illness. It can be passed from person to person by close contact such as kissing or skin contact.
"Most people who come into contact with Group A Strep remain well and symptom free, some get mild throat or skin infections. Contracting invasive disease from a relative or household member is very rare."
When looking at the five deaths in England, the last time there was an intensive period of Strep A infection was in 2017/18, when there were four deaths in the equivalent time frame.
The UKHSA said investigations are also under way following reports of an increase in lower respiratory tract Group A Strep infections in children over the past few weeks, which have caused severe illness.
What is invasive Group A Streptococcal disease?
Invasive Group A Strep disease is sometimes a life-threatening infection in which the bacteria have invaded parts of the body, such as the blood, deep muscle or lungs.
Two of the most severe, but rare, forms of invasive disease are necrotising fasciitis and streptococcal toxic shock syndrome.
Necrotising fasciitis is also known as the “flesh-eating disease” and can occur if a wound gets infected.
Streptococcal toxic shock syndrome is a rapidly progressing infection causing low blood pressure/shock and damage to organs such as the kidneys, liver and lungs.
This type of toxic shock has a high death rate.
Can these illnesses be treated?
Strep A infections such as scarlet fever and impetigo are treated with antibiotics.
After a full 24 hours of antibiotics, people are generally thought to no longer be contagious.
Anyone thought to have invasive Group A Streptococcal disease should seek medical help immediately.
When should I see a doctor?
Strep throat is different from a regular sore throat and the pain can come on very quickly.
Symptoms include pain when swallowing, fever, and red and swollen tonsils – sometimes with white patches or streaks of pus.
The NHS recommends people see their GP if a sore throat does not improve after a week, if they are worried or if they have a high temperature, or feel hot and shivery.
People with weakened immune systems such as those having chemotherapy should also see a doctor.
Impetigo is a skin infection which starts with red sores or blisters that then burst, leaving crusty, golden patches. The infection can be treated with antibiotics.
Scarlet fever symptoms are often flu-like, including a high temperature, a sore throat and swollen neck glands.
A rash appears 12 to 48 hours later, starting on the chest and stomach and then spreading.
A white coating also appears on the tongue which peels, leaving the tongue red, swollen and covered in little bumps (often called “strawberry tongue”).
Signs of necrotising fasciitis include fever (a high temperature above 38C), severe pain and swelling, and redness at the wound site.
Early signs and symptoms of toxic shock may include fever, dizziness, confusion, low blood pressure, rash and abdominal pain.
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